Question

A number from 12 to 22 was drawn at random p(not 13)

Answer 1

Answer:

P(not 13) = 9/10

Step-by-step explanation:

Given:

Numbers from 12 to 22 drawn at random

To find:

P(not 13)

List of the numbers from 12 to 22 = 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22

Probability of drawing number 13 = number times 13 occurred/total numbers

`Pr(13)\text{ = }\frac{\text{1}}{10}`

Probability of not drawing 13 = Pr(not 13)

`\begin{gathered} Pr(not\text{ 13\rparen = 1 - pr\lparen13\rparen} \\ Pr(not\text{ 13\rparen = 1 - }(1)/(10) \\ LCM=\text{ 10} \\ Pr(not\text{ 13\rparen = }\frac{1(10)\text{ - 1}}{10}\text{ = }(10-1)/(10) \\ \\ Pr(not\text{ 13\rparen= 9/10} \end{gathered}`